Home / 58,051.05-87,115.40-21,115.05

Finding the Fourth Proportional to 58,051.05, 87,115.40 and 21,115.05

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Solution

The fourth proportional to 58,051.05, 87,115.40 and 21,115.05 is: 31,686.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,051.05 : 87,115.40 = 21,115.05 : x
  2. Step 2: Convert to fraction form
    58,051.05/87,115.40 = 21,115.05/x
  3. Step 3: Cross multiply
    58,051.05x = 87,115.40 × 21,115.05
  4. Step 4: Simplify right side
    58,051.05x = 1,839,446,026.77
  5. Step 5: Solve for x
    x = 1,839,446,026.77/58,051.05
  6. Step 6: Final answer
    x = 31,686.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.